While the Lack is a very good shelf for next to nothing, Finite Elemente and SRA racks (examples I own) are better sounding and better pieces of furniture. I am not sure of the cost question. One is designed to be ultra cheap and mass manufacturered. A smart guy named Ken Lyons promoted their use. FE and SRA are much better pieces of furniture, sound better and not mass produced.
Also the Lack is a shelf, not a unit. Solidity and stability was not the point. They are very light and rigid to yield clean bass. "Solid" actually means nothing to me by itself as far as performance is concerned. My flexy was solid and sounded horrible.
Also the Lack is a shelf, not a unit. Solidity and stability was not the point. They are very light and rigid to yield clean bass. "Solid" actually means nothing to me by itself as far as performance is concerned. My flexy was solid and sounded horrible.